如何进行升序排序 [英] How to do an ascending sort

问题描述

:confused:以下是我的迷你项目代码，我想知道如何进行升序排序以对total_day_wind进行升序排序.

:confused:Below is my code for a mini project, I would like to know how to do an ascending sort to sort total_day_wind in ascending order.

cout << "Please enter a specific value : ";
cin >> wind_value;

	for(i=0; i<dataSize; i++)
	{
	   if(data[i].date().day() != currentDay)
	   {
	      total_day_wind /= ave_day_data;
	      if (wind_value <= total_day_wind)
								
	cout << "Average WindSpeed equal or above " << wind_value << " at Month " << data[i].date().month() << " on Day " << data[i].date().day()  << " is " << total_day_wind << " knots " << endl;							
		currentDay = data[i].date().day();
		total_day_wind = 0.0;
		ave_day_data = 0;			
	   }
	   total_day_wind += data[i].windspeed();
	   ave_day_data++;				 		
	}
	system("pause");
	total_day_wind = 0.0;
	ave_day_data = 0;

推荐答案

total_day_wind看起来像float或double给我.对单个值进行排序有点琐碎...

如果您在某处收集了风速并且想要将它们按升序排序，请使用std :: sort:

total_day_wind looks like either a float or double to me. It''s a bit trivial to sort a single value...

If you''ve got a collection of wind speeds somewhere and you want to sort them into ascending order then use std::sort:

std::vector<double> wind_speeds;

// Much clever code to populate wind_speeds

std::sort( wind_speeds.begin(), wind_speeds.end() );

干杯，

灰

再次编辑，我忘记了逃脱尖括号

Cheers,

Ash

Edited as yet again I forgot to escape angle brackets

典型的方法是使用C ++运行时qsort函数.

另一种快捷方式是填充一个隐藏的，已排序的列表框(项目数据是数组的索引).添加所有数据字符串后，您将获得一个排序列表.

The typical way to do this is by using the C++ runtime qsort function.

Another quickie way is to populate a hidden, sorted listbox (the item data is the index into your array). After all data strings have been added, you have a sorted list.

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